SolveItClass 10 · NCERT

NCERT Solutions · Class 10 Science Metals and Non-metals

16 questions · 16 still being checked

EXERCISES 1–10 (part 1 of 2)

  1. Exercise 1

    Which of the following pairs will give displacement reactions?
    (a)
    NaCl solution and copper metal
    (b)
    MgCl2 solution and aluminium metal
    (c)
    FeSO4 solution and silver metal
    (d)
    AgNO3 solution and copper metal.
    NCERT’s answer
    (d)

    Working being prepared

  2. Exercise 2

    Which of the following methods is suitable for preventing an iron frying pan from rusting?
    (a)
    Applying grease
    (b)
    Applying paint
    (c)
    Applying a coating of zinc
    (d)
    All of the above.
    NCERT’s answer
    (c)

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  3. Exercise 3

    An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be
    (a)
    calcium
    (b)
    carbon
    (c)
    silicon
    (d)
    iron.
    NCERT’s answer
    (a)

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  4. Exercise 4

    Food cans are coated with tin and not with zinc because
    (a)
    zinc is costlier than tin.
    (b)
    zinc has a higher melting point than tin.
    (c)
    zinc is more reactive than tin.
    (d)
    zinc is less reactive than tin.
    NCERT’s answer
    (c)

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  5. Exercise 5

    You are given a hammer, a battery, a bulb, wires and a switch.
    (a)
    How could you use them to distinguish between samples of metals and non-metals?
    (b)
    Assess the usefulness of these tests in distinguishing between metals and non-metals.

    Solution being prepared

  6. Exercise 6

    What are amphoteric oxides? Give two examples of amphoteric oxides.

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  7. Exercise 7

    Name two metals which will displace hydrogen from dilute acids, and two metals which will not.

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  8. Exercise 8

    In the electrolytic refining of a metal M, what would you take as the anode, the cathode and the electrolyte?

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  9. Exercise 9

    Pratyush took sulphur powder on a spatula and heated it. He collected the gas evolved by inverting a test tube over it, as shown in figure below.
    (a)
    What will be the action of gas on
    (i)
    dry litmus paper?
    (ii)
    moist litmus paper?
    (b)
    Write a balanced chemical equation for the reaction taking place.

    Solution being prepared

  10. Exercise 10

    State two ways to prevent the rusting of iron.

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